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THE JOURNAL OF COMPARATIVE NEUROLOGY 288A47-473 (1989) PrimateSphothalamicPathways
 

Summary: THE JOURNAL OF COMPARATIVE NEUROLOGY 288A47-473 (1989)
PrimateSphothalamicPathways:
I. A QuantitativeStudy of the Cells
of Origin of the SpinothalamicPathway
A. VANIA APKARIANAND CHARLESJ. HODGE
Department of Neurosurgery, SUNY Health Science Center, Syracuse,New York 13210
ABSTRACT
In six monkeys spinothalamic (STT)cells were retrogradely labeled by
injecting 2% wheat germ agglutinin-conjugated horseradish peroxidase into
the somatosensory thalamus. Following a 5-day survival period, the animals
were perfused and the tissue was removed and processed with the tetramethyl
benzidine technique. In all animals there were HRP-labeled STT cells in all
segments of the spinal cord. In one old world monkey, the injection included
most of the thalamus and resulted in 18,235estimated total number of STT
cells. Of this total, 35% were located in the upper cervical segments (Cl-C3),
18% were located in C4-C8, 19% were in the thoracic spinal cord with most
found in TI-T3; 6% were in Ll-L3,13 % were in L4-L7, and 7% were in the
coccygealsegments. Of the total labeled STTcells, 17% were found in the spi-
nal cord ipsilateral to the thalamic injection; 53% of these cellswere located in
Cl-C3 primarily in lamina VIII. The percentage of label found in the contra-

  

Source: Apkarian, A. Vania - Department of Physiology, Northwestern University

 

Collections: Biology and Medicine